Posted: Tue Nov 17, 2009 11:03 am
Hi, and welcome to the board!
How large is your turtle? A 15 gallon stock tank isn't much of an improvement from the 10 gallon tank and she will outgrow it just as quickly. The general rule is 10 gallons of water/tank per inch of turtle shell, so a 1 year old turtle at about 4" shell length already needs a 40 gallon tank. A full grown female may need as large as a 120 gallon tank/pond! 15 gallons is sufficient for a 1.5" hatchling. You may want to return the 15 gallon stock tank and save up your money for the future.
Yes, turtles' behavior will change when you alter their tank, esp. from clear glass to dark walls or vice versa. I would highly recommend adding decorations or other things to make your turtle feel more comfortable, like aquarium plants, a hiding place made out of very large PVC pipe, sand at the bottom, or other things. Generally, we say to give the turtle 2-4 weeks to become normal again, and if she still isn't normal by then, you may want to try other decorations or basking areas to see if she gets better.
JAX
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Baby Boy - January 9th, 2011! (3 months old)
1 RES - 7" long - Umi (3.5 years old)
1 black lab/hound mix - Josie (1.5 year old)
2 cats - Mysti and Molly (6.5 years old)